योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-80, verse-4

अनाख्यत्वादगम्यत्वान्मनः षष्ठेन्द्रियस्थितेः ।
चिन्मात्रमेवमात्माणुराकाशादपि सूक्ष्मकः ॥ ४ ॥

anākhyatvādagamyatvānmanaḥ ṣaṣṭhendriyasthiteḥ ,
cinmātramevamātmāṇurākāśādapi sūkṣmakaḥ 4

4. anākhyatvāt agamyatvāt manas ṣaṣṭhendriyasthiteḥ
cinmātram evam ātmāṇuḥ ākāśāt api sūkṣmakaḥ

4. ātmāṇuḥ evam cinmātram ākāśāt api sūkṣmakaḥ
anākhyatvāt agamyatvāt manas ṣaṣṭhendriyasthiteḥ

4. Due to its indescribable nature, its inaccessibility, and its transcendence of the mind (manaḥ)—the sixth sense—the atomic self (ātman) is purely consciousness (cinmātram) and subtler even than space (ākāśa).

Words meanings summery:

• अनाख्यत्वात् (anākhyatvāt) - due to being unnameable, due to indescribability

• अगम्यत्वात् (agamyatvāt) - due to being inaccessible, due to unknowability

• मनस् (manas) - used generically for the internal organ of thought, will, and feeling (of the mind, by the mind)

• षष्ठेन्द्रियस्थितेः (ṣaṣṭhendriyasthiteḥ) - specifically referring to the mind as the sixth sense. (due to the state of the sixth sense (the mind), beyond the sixth sense)

• चिन्मात्रम् (cinmātram) - The nature of the ātman being nothing but consciousness. (purely consciousness, mere consciousness)

• एवम् (evam) - thus, in this manner, indeed

• आत्माणुः (ātmāṇuḥ) - The individual self described as atomic in size. (the atomic self, the minute self (ātman))

• आकाशात् (ākāśāt) - Used for comparison, 'subtler than space'. (from space, than space)

• अपि (api) - Emphasizes the subtlety of the ātman. (even, also, too)

• सूक्ष्मकः (sūkṣmakaḥ) - subtle, very subtle, minute

Words meanings and morphology

अनाख्यत्वात् (anākhyatvāt) - due to being unnameable, due to indescribability

(noun)

Ablative, neuter, singular of anākhyatva

anākhyatva - indescribability, the state of being unnameable

Derived from `anākhya` (indescribable) + `tva` (suffix for abstract noun)

Compound type : tatpurusha (anākhya+tva)

• anākhya – indescribable, inexpressible
  adjective
  Gerundive (karmaṇi prayogya)
  Negation of `ākhya` (nameable, describable), root `khyā` (to tell) with `ā` prefix
  Prefixes: an+ā
  Root: khyā (class 2)
• tva – state of being, -ness
  suffix/noun (neuter)
  Suffix forming abstract nouns

अगम्यत्वात् (agamyatvāt) - due to being inaccessible, due to unknowability

(noun)

Ablative, neuter, singular of agamyatva

agamyatva - inaccessibility, unknowability, the state of being unreachable

Derived from `agamya` (inaccessible) + `tva` (suffix for abstract noun)

Compound type : tatpurusha (agamya+tva)

• agamya – inaccessible, unknowable, unreachable
  adjective
  Gerundive (karmaṇi prayogya)
  Negation of `gamya` (reachable, knowable), root `gam` (to go)
  Prefix: a
  Root: gam (class 1)
• tva – state of being, -ness
  suffix/noun (neuter)
  Suffix forming abstract nouns

मनस् (manas) - used generically for the internal organ of thought, will, and feeling (of the mind, by the mind)

(noun)

Genitive, neuter, singular of manas

manas - mind, intellect, thought, consciousness

Root `man` (to think)

Root: man (class 4)

Note: The form `manaḥ` in Devanagari is `manas` with visarga sandhi. Here taken as genitive singular from context: 'of the mind'.

षष्ठेन्द्रियस्थितेः (ṣaṣṭhendriyasthiteḥ) - specifically referring to the mind as the sixth sense. (due to the state of the sixth sense (the mind), beyond the sixth sense)

(noun)

Ablative, feminine, singular of ṣaṣṭhendriyasthiti

ṣaṣṭhendriyasthiti - the state of the sixth sense (mind)

Compound of `ṣaṣṭha` (sixth) + `indriya` (sense) + `sthiti` (state/position)

Compound type : karmadhāraya (ṣaṣṭha-indriya) and then tatpurusha (ṣaṣṭhendriya-sthiti) (ṣaṣṭha+indriya+sthiti)

• ṣaṣṭha – sixth
  numeral adjective
  Ordinal number from `ṣaṣ` (six)
• indriya – sense organ, faculty of sense
  noun (neuter)
  From `indra` (lord, ruler) + `ya` suffix; that which pertains to Indra or gives power.
• sthiti – state, condition, existence, position, steadfastness
  noun (feminine)
  From root `sthā` (to stand) + `ti` suffix
  Root: sthā (class 1)

Note: The mind (manas) is often referred to as the sixth sense.

चिन्मात्रम् (cinmātram) - The nature of the ātman being nothing but consciousness. (purely consciousness, mere consciousness)

(adjective)

Nominative, neuter, singular of cinmātra

cinmātra - pure consciousness, mere consciousness

Compound of `cit` (consciousness) + `mātra` (only, mere)

Compound type : karmadhāraya (cit+mātra)

• cit – consciousness, thought, intelligence
  noun (feminine)
  From root `cit` (to perceive, to know)
  Root: cit (class 1)
• mātra – only, mere, solely
  indeclinable/adjective (neuter)

Note: It qualifies `ātmāṇuḥ` (neuter form used as adjective).

एवम् (evam) - thus, in this manner, indeed

(indeclinable)

आत्माणुः (ātmāṇuḥ) - The individual self described as atomic in size. (the atomic self, the minute self (ātman))

(noun)

Nominative, masculine, singular of ātmāṇu

ātmāṇu - atomic self, minute self

Compound of `ātman` (self) and `aṇu` (atom, minute particle)

Compound type : karmadhāraya (ātman+aṇu)

• ātman – self, soul, spirit, individual soul
  noun (masculine)
  Root: an (class 2)
• aṇu – atom, minute, subtle, small particle
  noun/adjective (masculine)

Note: Refers to the `ātman` which is described as subtle or atomic.

आकाशात् (ākāśāt) - Used for comparison, 'subtler than space'. (from space, than space)

(noun)

Ablative, masculine, singular of ākāśa

ākāśa - space, ether, sky

Root: kāś (class 1)

अपि (api) - Emphasizes the subtlety of the ātman. (even, also, too)

(indeclinable)

सूक्ष्मकः (sūkṣmakaḥ) - subtle, very subtle, minute

(adjective)

Nominative, masculine, singular of sūkṣmaka

sūkṣmaka - subtle, fine, minute, delicate

From `sūkṣma` (subtle) with `ka` suffix (diminutive or intensifier)

Note: Qualifies `ātmāṇuḥ`.